When it comes time to select new parts and accessories for your GLOCK firearm, choose authentic factory GLOCK parts. These parts are manufactured to strict and specific tolerances and pass rigid test in order to become authentic GLOCK parts. Using factory parts and accessories will ensure that you GLOCK firearm will continue to operate reliably for years to come. Don't trust some unknown sub par company for your GLOCK parts; use only the very best, use genuine GLOCK factory parts and accessories.